****************************************************************************** dorisreport 23-Feb-2007 10:38:02 Message No 0807 ****************************************************************************** Author: WILLIS Pascal Subject: IGN/JPL DORIS Report for week 1408 = 06365 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1408 from 31-12-2006 to 06-01-2007 DORIS name (using day of start): 06365 Days of year: from 2006/365 to 2007/6 ============================================================== Author: Pascal Willis 1) Contacts =========== Email pascal.willis@ign.fr Phone 1-818-393-4748 FAX 1-818-393-4965 2) Products =========== All the following products are available at the CDDIS data center ftp cddis.gsfc.nasa.gov weekly sinex in free-network pub/doris/products/sinex_series/ignwd/ign06365wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06365wd04.snx.Z geocenter series pub/doris/products/geoc/ign03wd01.geoc.Z Earth Orientation Parameters time series pub/doris/products/eop/ign03wd01.eop.Z 3) Analysis Strategy ==================== The DORIS data have been processed using the Gipsy/Oasis software at the Jet Propulsion Laboratory Suggestions on which solutions should be used or not can be found in pub/doris/products/sinex_series/ign.snx.readme Complete description files can be found at CDDIS at weekly sinex in free-network pub/doris/products/sinex_series/ignwd/ignwd05.snx.dsc weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ignwd04.snx.dsc geocenter series pub/doris/products/geoc/ign03wd01.geoc.dsc Earth Orientation Parameters time series pub/doris/products/eop/ign03wd01.eop.dsc For references, the following papers are recommended : Willis, P., M. Heflin (2004), External validation of the GRACE GGM01C gravity field using GPS and DORIS positioning results, Geophys. Res. Lett., 31(13), L13616, DOI:10.1029/2004GL020038. Willis, P., C. Boucher, H. Fagard, Z. Altamimi (2005), Applications geodesiques du systeme DORIS a l'Institut Geographique National, Geodetic applications of the DORIS system at the French Institut Geographique National, C.R. Geoscience, 337(7), 653-662, DOI:10.1016/j.crte.2005.03.002. Last changes in the time series data analysis: Week 678 = 93003 : See DORISMail #0288, start of the time series Week 1281 = 04207 : Estimate DORIS wet tropospheric delay per measurement using a randomwalk approch (Psigma = 5 cm per day) no horizontal gradients used yet. See DORISMail #0345 Week 1287 = 04249 : Start using cumulative solution ign04d02 to perform the ITRF2000 transformation (when needed) Week 1293 = 04291 : Start using actual mass information for all satellites (as provided in the new *mass.txt files) instead of nominal values as before Week 1341 = 05261 : Do not estimate the constant term of the relativity correction (this is already done by CNES by modifying the on-board oscillator, exactly like for GPS). Use a cutoff angle of 15 degrees (before that, no cutoff angle was used but now CNES is delivering data at very low elevation. Do not estimate tropospheric correction as random walk anymore. Use 1 parameter per hour (maximum) + 2.5 cm@ 1d as constraint. Week 1405 = 06344 : Use GIPSY/OASIS software installed at Institut de Physique du Globe de Paris 4) Global Statistics ==================== GPS week number 1408 from 31-12-2006 to 06-01-2007 Total number of stations = 48 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.79 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 31-12-2006 20330 4 20326 0.0 01-01-2007 21330 2 21328 0.0 02-01-2007 21470 1 21469 0.0 03-01-2007 21102 7 21095 0.0 04-01-2007 22899 1 22898 0.0 05-01-2007 23076 11 23065 0.0 06-01-2007 22832 6 22826 0.0 5) Individual Statistics per satellite ====================================== The following table includes all data that have been kept in the solution (after pre and post-processing) 5.1) Number of observations per satellite ----------------------------------------- day1 day2 day3 day4 day5 day6 day7 --------------------------------------------------------------- ENVISAT 3487 4841 4844 4516 6127 6416 6127 SPOT2 4666 4541 4464 4464 4344 4524 4590 SPOT4 5092 4979 4985 4813 5168 5020 5014 SPOT5 7081 6967 7176 7302 7259 7105 7095 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.391 0.388 0.392 0.379 0.389 0.401 0.397 SPOT2 0.418 0.433 0.425 0.408 0.414 0.413 0.420 SPOT4 0.400 0.414 0.431 0.424 0.430 0.421 0.408 SPOT5 0.356 0.358 0.364 0.359 0.360 0.375 0.364 6) Individual Statistics per station ====================================== 6.1) Stations given in sinex solutions -------------------------------------- The following table includes all DORIS data that were used to generate the weekly DORIS sinex solutions o = station after a break in the DORIS time series day1 day2 day3 day4 day5 day6 day7 --------------------------------------------------------------- ADEB 1207 1285 1359 1149 1473 1456 1440 AMTB 438 494 492 373 566 560 571 ARFB 283 337 382 346 441 453 360 ASDB 286 332 379 321 324 384 407 BETB 372 433 300 308 308 376 432 CADB 342 345 392 420 502 483 437 CICB 384 451 404 386 518 462 462 CROB 329 344 394 420 550 423 454 DIOB 349 474 396 491 479 507 461 DJIB 392 425 423 400 472 469 468 EVEB 262 248 276 257 232 289 319 FAIB o 799 926 882 806 1129 1078 982 FUTB 353 347 367 374 422 415 421 GAVB 215 195 219 204 124 187 231 GREB 425 417 455 397 515 591 508 HEMB 396 329 222 397 392 266 465 JIUB 416 514 424 474 548 513 516 KIUB 483 589 530 588 655 650 624 KOLB 505 483 587 470 561 654 557 KRUB 299 347 267 323 449 402 470 LICB 328 356 443 446 435 457 433 MAHB 274 298 339 346 389 388 358 MALB 355 383 422 499 474 460 458 MANB o 333 440 414 351 440 491 476 MATB 541 520 489 603 504 531 553 METB 640 622 697 587 709 719 715 MIAB 337 331 371 431 464 445 388 MONB 438 548 513 529 599 522 570 MORB 259 462 361 387 545 473 456 NOWB 355 273 361 373 460 502 374 PAQB 417 346 349 393 443 518 432 REUB 281 389 317 369 453 459 377 REZB 475 582 493 689 671 683 637 RIKB 455 492 401 471 479 447 502 RIPB 496 556 631 591 701 745 693 ROTB 1136 1200 1158 1180 1456 1450 1458 SALB 383 382 435 458 488 382 589 SANB 354 415 537 423 565 464 516 SCRB 375 434 401 361 468 478 435 SODB o 176 101 140 169 183 86 151 SPJB 1396 1291 1308 1276 1484 1458 1502 STJB 565 571 557 539 578 643 633 SYPB 1260 1321 1424 1273 1398 1580 1501 THUB 1169 1153 1218 1166 1346 1363 1252 TLHA 480 369 413 514 555 598 500 TRIB o 523 430 494 497 483 544 601 YASB 489 429 480 434 547 577 653 YELB 635 749 752 804 922 875 847 6.2) stations rejected from solution ------------------------------------ all available stations were processed and given in the output sinex solutions 6.3) statistics per station and per satellite (stations in sinex) ----------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- ADEB 3240 1556 1767 3177 AMTB 945 577 898 1191 ARFB 837 395 563 890 ASDB 719 536 530 833 BETB 478 671 699 846 CADB 677 708 814 840 CICB 831 690 743 943 CROB 907 435 593 1124 DIOB 774 803 799 879 DJIB 864 666 734 925 EVEB 423 370 463 690 FAIB 1890 1149 1185 2608 FUTB 841 537 582 922 GAVB 739 0 0 782 GREB 971 549 769 1130 HEMB 832 334 498 947 JIUB 934 714 734 1161 KIUB 970 1074 1080 1225 KOLB 964 984 1032 972 KRUB 667 610 644 877 LICB 910 651 573 891 MAHB 735 448 469 873 MALB 825 687 762 915 MANB 835 636 670 972 MATB 961 752 851 1296 METB 1506 723 871 1746 MIAB 758 573 567 982 MONB 1118 797 813 1139 MORB 731 593 769 973 NOWB 915 379 597 921 PAQB 827 658 673 928 REUB 786 573 552 879 REZB 1526 579 530 1763 RIKB 979 683 757 1063 RIPB 1628 584 639 1735 ROTB 2805 1562 1650 3284 SALB 1026 664 703 986 SANB 946 668 695 1068 SCRB 712 626 729 966 SODB 0 574 448 0 SPJB 2954 1645 1821 3561 STJB 1112 855 925 1307 SYPB 3198 1686 1929 3246 THUB 2342 1591 1841 3099 TLHA 1194 464 605 1317 TRIB 894 831 928 1090 YASB 943 737 975 1095 YELB 1877 859 904 2145 6.4) statistics per station and per satellite (deleted stations) ---------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- 7) External Comparisons ======================= (for information) 7.1) Stations coordinates ------------------------- Looking at the transformation results Comparing with solution ign04d02 at epoch of observations Weekly DORIS residuals in mm N E V ------------------- WRMS 16.3 13.8 17.1 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -10.2 +- 2.3 mm TY = -0.8 +- 2.3 mm TZ = 35.0 +- 2.1 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -1.5 +- 0.3 ppb 7.4) Earth Orientation Parameters --------------------------------- External comparison with JPL/GPS EOP values number of days compared X_POLE_RMS (mas) Y_POLE_RMS (mas) ------------------------------------------------------------------ 7 1.04 0.64 ============================================================== Cliquez sur l'url suivante https://www.mailcontrol.com/sr/GXAnsCIOQmLsx!6gn4gtJEVXiIInx9nkNCsAf0joztolErgM!JjhHwhYEh8EC7GGxFzQNC685m6s0DWhOqV6f!XOfMtL73KPZmlsZ+1VPYa8BMrsjsqyvU2fjZDyw7HBLpBErKSal3IyG5t9sFuWZRU2uNokP2Y1OY6B!kdbT+VjZBIKehQuSQ3zkwodUEtaMgwOpE!FH6S49bGD!zSdgjmTLTqwMlDR si ce message est indésirable (pourriel). 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